Cook the mushrooms in a saute pan just until tender.,Combine the mushrooms and all the other ingredients in a large bowl.,Mix.,Spray a 9x13-baking dish (or a deep dish pie plate) with cooking spray.,Place mixture into baking dish and spread to even out.,Bake at 350 for 25 30 minutes.,Serve with crackers, tortilla chips, or garlic toasts like we did!,*I laid my pepperoni out on a paper towel for 30 seconds in the microwave just to get out some of the grease, and then I chop it up.,______